Geoffrey of Monmouth

Geoffrey of Monmouth (c. 1100 – c. 1155) was a clergyman and writer. He was probably born in Wales. He was made the bishop of St Asaph on 21 February 1152.

He wrote History of the Kings of Britain. This book told the story of all the kings of Britain since ancient times. The book was thought to be true for a long time. Some modern historians say Geoffrey made up most of it.